Resilient tire



L.y W. WOOD.

RESILIENT'TIRE.

APPLICATION FILED sEPT.24.192o.

l ,405,960, Patented Feb. 7, 1922.

' um 'n 4%/ LEAND'ER wQwooD, or roN'rANELLE, Iowa.

RESILIENT TIRE.

speeineetien of Letters remt.

Patented Feb. 7, 1522.

Application med september 24, 192e. serial' N. 412,601.

T 0 all whom z't may concern:

Be it known that I, LnANDnR W. Woon, a citizen of the United States, andYresident ,of Fontanelle, in the county of Adair and State of Iowa, haveinvented a certain new and useful Resilient Tire, of which thefollowing` is a specification.

he object of my invention is to provide a resilient tire for wheels, ofsimple, durable and inexpensive construction, so constructed as toprovide a large amount of flexibility when in action, and at the sametime being rigid enoughto carry the load applied to the wheel, and alsoto prevent a large amount of lateral and torsional movement relative tothe wheel.

A further object is to provide, in a resilient tire, means whereby 4amaximum amount of traction may be obtained at all time'seven. when thetire haslbecome considerably worn, and also to prevent skiddirg.

ith these and other objects in view, my

invention consists in the construction, arrangementand combination ofthe various parts of the device, whereby the objects coni templated 'areattained, as hereinafter more im'12,fdesign fully set forth, pointed outin my claims, and illustrated in the accompanyingdrawings, in which:- v

igure l shows an inverted planl view of a portion of thetread of myimproved tire. Figure 42 shows a side elevation of the same as.appliedvto a segment of the wheel. Figure 3 is a'transverse sectionalview taken on the line 3-3 of Figure 2, showing g the relation of thetread members to the ground justas the tire touches it and bef or; theweight or load has been applied; an

Figure shows a transverse sectional view taken on the line 44 ofFigure\2, showing the tire as applied to the ground-when the load hasbeen applied.

M improved tlre is adapted to be upf p lle l to any wheel which requiresa resilient t1re such as is commonly used on automoe For Aapplying mimproved tire have preferably provide a rim 10 secured to the felly 11of the wheel in the usual manner.l

This rim 10 is provided with a series of transversely 'arran dcorrugated portions edtolitan suitable grooves in the felly 11. The rim10 is made somewhat thinner onone .side than on the other, so

member 18 forms a sort of shoc that a tapering periphery is provided.The l rim .10 is secured to the wheel in the ordinary way, and isdesigned to be retained 1n positlon at all times.

My improved tire consists of `a rim 13 made on a taper, so as to` slipover and coact with the rim 10 when in position. The rim 13 is providedwith outwardly projecting corrugated portions 14, so spaced as to oplates 15a secured in position by means of bolts 15b and 15C.Reinforcing rods -17 are provided for preventing the member 16 fromstretching when in action.

The vmember 16 is formed ,into two di verving annular tread members 18and 19, wit an annularfV-shaped grooive 20 formed between said members.The member 18 is formed somewhat larger in diameter than the member 19,asy clearly' shown in Figure 3, and is designed to be placed on theoutside when mounted on the wheel. Each of correspond with thecorrugated portions 12 these members 18 and 19 is provided with abeveled face 21.

By this construction it will be seen that When the tire is mounted andthe wheel is in action, the member 18 will enga e the round before themember 19, an after the wheel has been advanced slightl the face 21 willengage the ground s uare y, as

shown in Figure 4, aswill also t e face 21 of the member 19. Bythisarran ement the absorber which will give slightly and easeV the joltbefore the member 19 has reached the ground. The beveled portion 21 alsoassists, due to the fact that the outer .edge of the bevel strikes theground before t e inner edge, making the sharp corner of the member 18 areat'deal more resilient than if the entire ace of the tread were in en-.ga ement with the ground: e

the load is applied t will be seen that as ortions, they will on thesediverging tread have a tendency :to sprea in holding the tread portionstogether I have provided a series of openings 22, extending tranverselythrough the inner edge-of the apart. To assist lll ymember 16 andthrough the inner edge of the groove 20. Each of these openings is,f

l threaded portion 26, whichv is designed to always provided inthe faceof how much the tire may be construction,

receive a washer 27 and al nut 28. The

' squared portion 25 is designed to .fit a square hole at the, end ofthe opening 22, to prevent the said member from being rotated -as thenut28 is tlghtened.v The spring-23 is of such a length that' when inpositionit will exert 'a considerable inward pressuretothe members 18and 19, thereby helping to hold them against spreading.

If a heavy shock 'is applied to the tread members 18 and 19, sli htly,thereby 4causing a cushioning effect un er heavy loads without materialinjury tothe materiall of which the tire is `con-- structed. Thismaterial may be any resilient material such; as rubber.

To provide a means for increasing `the traction of the tire on thelground, I have provided a series of 'transverse o enings 29 1n themember 19, and a series ci) diagonal, transverse openings 30 in themember 18. These openings are arranged in staggered relation to eachother, and in such a manner that atthe face 21, so that a series of'rooves is formed therein. It will be seen t atas the face 21of'the tireis worn down, on ac' count of the staggered relation ofthe openings 29and 30 new'openings will come to the surface, lforming a new set'` ofgrooves.

By this arrangement a series of grooves` is 21, regardless Worn. Theseopenings also assist in making the members 18 and 19 more resilient Inorder to provide against' the member 18 wearin faster than the member29, so that the said members may become the same length, have provided areater number of openings 29 in the mem er 19, so that the said memberwill wear a little `faster than the member 18, due lto lthe fact thatthe area of the face 21 will thereby be made somewhat smaller than thearea 'of the face 21 of the member 18. To further assistinl providingtraction for the tread members 18 and 19, I have provided a series ofsubstantially radial grooves 31 and A32, the grooves 31 be1ng applied tothe outer faces of the members 18 Aand 19,'while the grooves 32 areapplied tothe inner faces instaggered relation to the grooves 31.

It will thus be seen that I have provided a tire of simple, durable andinexpensive which is ver resilient when Y subjected to shocks, and w ichis provided witha large amount of grooved surface to gage the ground 'toprevent slipping.

t will also seen' that due to the fact the spring 23 will yield greaterin diameter than part of the openings are alwaysv that the member 18 islonger than the mem- I ber 19 and placed on the outer side of the wheel,the outer 'edge of the face 21 will engage the groundin such a manner asto assist in preventingr the tire from skidding ing skiddingwhen in softearth, as the soft earth will be slightly crowded u between the members18 and 19, due to t e weight ap lied to the wheel.

t will also be seen that the tire may be easily and quickly removed fromthe wheel by removing the nuts vfrom the bolts 15 and then sliding therim 13 laterally relative to the rim 10. The bolts 15falso serve toprevent the tire vfrom twisting on the rim. I claim as my inventiont. 1.A wheel tire comprising van annula member formed of a resilient materialand l havingA two annular diverging treads, one of thetreads of Saidmember being slightly the other, for the purposes stated.

2. A .wheel tire comprising an annular member formed of a resilientmaterial and having two annular, dverging, rforated treads, one ofthetreads of sai being slightly greater in diameter than the other.

member formed-of a resilient material and having two annular divergingtreads, one of the treads of said member being slightly 3. 4A wheel tirecomprising an annular y member greater in diameter than the other, eachoisaid treads being formed with a series of substantially transverseperforations or openings to form gripping grooves as the tread is wornolf.

- 4. A -wheel tire comprising an annular member formed of a resilientmaterial and having two annular diverging treads, one of the treads ofsaid member being slightly greater -in diameter than the other, one ofthe treads being formed withV a series of `diagonal perforations, andthe other with aseries of transverse perforations, the said perforationsbeing arranged in staggered relation with each other, substantially asdescribed and for the purposes stated.

5. A wheel tire comprising an annular member formed of a resilientmaterial andg treads, each of having two annular diver said treads beingforme with' a series of substantially transverse perforations oropenings to form gripping grooves for said treads as the tread membersare worn of.

y 6. A `wheel vtire comprising an annular member formed of a resilientmaterial and having two annular diverging treads, onel of the treadsbeing formed with a series of diagonal perforations, and the other withatransverse series of perforations, the said perforations being arrangedin staggered relation with each other.

' having of said treads being formedl wlth a series of substantiallytransverse perforations or member formed of resilient material havingopenings to form gripping groovesfor said treads asY the tread membersare Worn olf, and each of said treads bein provided with substantiallyradial inner an outer grooves.

,8. A wheel tire comprising an annular member formed of a resilientmaterial and having two annular diverging treads, one of the treads ofsaid member being slightly greater in diameterl than, the other, anyieldingmeans to resiliently oppose separation of said treads. v

9. A wheel tire comprising an annular two annular and separable anddiverging treads, yielding means arranged -trans-v versely in saidtreads Ato-r'esiliently oppose separation of said treads.

' l0. A wheel tire comprising an annular member formed of resilientmaterial and having' annular diverging treads, yielding means toresiliently .oppose separation of said treads, each of which comprises aspring, a head member mounted on one end of s'aid spring designed 'torest against the outer faceof one of the tread members, a screw-threaded member other end of said spring, a washer on said screwthreaded member designed to engage the outer surface of the oppositetread memd ber, and a nut on said screw threaded mem-- ber to engagesaid washer.

v Des Moines, Iowa, August 25, 1920.

LEANDER W. WOOD.

attached l to the`

